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EP0035010B1 - Apparatus for the manufacture of profiled plate-like moulded articles of concrete or the like, preferably roof tiles - Google Patents

Apparatus for the manufacture of profiled plate-like moulded articles of concrete or the like, preferably roof tiles Download PDF

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Publication number
EP0035010B1
EP0035010B1 EP81890026A EP81890026A EP0035010B1 EP 0035010 B1 EP0035010 B1 EP 0035010B1 EP 81890026 A EP81890026 A EP 81890026A EP 81890026 A EP81890026 A EP 81890026A EP 0035010 B1 EP0035010 B1 EP 0035010B1
Authority
EP
European Patent Office
Prior art keywords
manufacture
hard metal
smoothing device
arcuate
portions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP81890026A
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German (de)
French (fr)
Other versions
EP0035010A1 (en
Inventor
Leopold Bock
Franz Hübler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cambio Ragione Sociale braas GmbH
Original Assignee
Braas GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Braas GmbH filed Critical Braas GmbH
Priority to AT81890026T priority Critical patent/ATE5303T1/en
Publication of EP0035010A1 publication Critical patent/EP0035010A1/en
Application granted granted Critical
Publication of EP0035010B1 publication Critical patent/EP0035010B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/12—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material
    • B28B3/123—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material on material in moulds or on moulding surfaces moving continuously underneath or between the rollers, e.g. on an endless belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/12—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material

Definitions

  • the invention relates to a device for the production of profiled, plate-shaped moldings, preferably roof tiles, made of concrete or the like or the like. Filled formwork is carried out in the production direction and the moldings located therein are compacted and profiled, the compacting roller and / or the smoother having a surface made of hard metal in their surface areas subject to wear.
  • One problem with the manufacture of such a device is to bring the hard material of the support into perfect conformity with the profile of the base, in order thereby to ensure that these parts are reliably connected by welding or the like. Ensure the necessary surface contact of the connecting surfaces.
  • both its base and its support were divided into individual strips, each base strip being connected individually to a strip of the same width of the material forming the support. These strips made of different materials were then joined together to the full width of the smoothing and z. B. clamped together by bolts.
  • the object of the present invention is to remedy these deficiencies and to design a device of the type described at the outset in such a way that the above-mentioned difficulties are avoided.
  • the hard metal layer has an intermediate layer with a base, preferably made of steel, optionally with a positive fit, for example, as such, via an intermediate layer consisting of a metal-plastic mixture, preferably a steel-plastic mixture known - is connected by means of interlocking, undercut profiled tongues and grooves.
  • the hard metal support of the compacting roller or of the smoothing machine can be divided according to its profile over its entire width and can be assembled from sections.
  • This can advantageously be used for the production of roof tiles with a plurality of regions which extend over the entire width, in part domed and in part flat, in particular for the production of so-called Roman profiles.
  • a design of the device components is to be developed in which a desirably simple, robust and hard-wearing form of the hard metal supports can be used.
  • the hard metal support of the smoothing device - according to the profile of the roof tiles to be produced, which have partly curved and partly flat areas over their width - can be divided into as many flat and curved sections, which are joined together with their longitudinal edges and joined to the base.
  • the base of the compaction roller can advantageously also be subdivided according to the profile of the roof tiles into those sections which are then mounted on a common drive shaft. This results in a further advantage that such sections can be replaced or renewed individually in the event of breakage, without the need to replace the entire component.
  • separate sections of the base of the compacting roller are assigned to the curved areas, the flat areas and the area of the profiling of the roof tile provided with folds.
  • the Compaction roller is a hard metal pad attached to the base by means of the intermediate layer.
  • the sections of the arched areas can therefore consist entirely of a material that is softer than the hard metal of the supports, especially since the sections are compact and comparatively small and are not subject to any risk of breakage from the outset.
  • Figures 1 to 3 first represent the storage container 1, in which the concrete to be processed with a grain size of the aggregate of about 0 to 3 mm is fed from a mixer and in which it from the rotating distributor, for. B. a spiked roller 2, the task of which is to distribute the material evenly, is promoted under the compressor roller 3, the so-called «roller». The underside of this compacting roller 3 is also fed formwork molds 5 for the moldings 6 to be molded on a machine bed 4 (FIG. 3).
  • the formwork forms 5 filled with the compacted concrete get under the smoother 7, which is inclined at a certain angle of attack with respect to the machine bed 4 and with its end face, which is formed to a pointed edge and faces the compacting roller 3, connects tangentially directly to its underside.
  • the smoother 7 is held by a bridge 9 spanning the machine bed 4 and the conveying path of the formwork forms 5.
  • the direction of manufacture and the direction of conveyance of the formwork 5 is indicated by the arrow 10.
  • the smoother 7 shown in FIGS. 4 and 5 on a larger scale in the longitudinal and cross-section now has a base 11 made of cast or forged steel, which has an initially castable, hardenable mixture of about 80% steel and 20% Epoxy resin existing intermediate layer 12 is connected to a support 13 consisting of the so-called hard metal.
  • hard metal With hard metal is known a sintered metal hard alloy, which consists of one or more hard materials, eg. B. tungsten, titanium, tantalum carbide, etc. with a binding metal of the iron group, mostly cobalt but also nickel or iron, and has a particularly high hardness and wear resistance.
  • hard materials eg. B. tungsten, titanium, tantalum carbide, etc.
  • a binding metal of the iron group mostly cobalt but also nickel or iron, and has a particularly high hardness and wear resistance.
  • connection between the base 11 and the support 13 essentially results from the cementing by means of the intermediate layer 12, but - according to the embodiment according to FIGS. 4 and 5 - undercut profiled springs 14 and grooves 15 can also additionally be provided for the positive locking of these Connection may be provided, as shown in Fig.5.
  • the support consists of sections which correspond to the flat or curved areas of the smoothing device 7 and are connected to the base 11 with their longitudinal edges closely joined together.
  • the pad 13 could - in the context of the invention - also consist of one piece.
  • An edge part 27 of the smoothing device 7 is profiled with folds 26; it can consist entirely of hard metal.
  • the compressor roller 3 shows the construction according to the invention shown in FIG. 6, namely its base 16 consists of the sections 17, 17 ', 18 and 19 which are lined up on the drive shaft 20 and held in a rotationally fixed manner by means of a wedge 21 and a nut 22.
  • This compacting roller 3 also includes - in accordance with the profiling of the moldings 6 to be produced - partly flat, partly curved, profiled areas, namely the sections 17 and 17 'are the less stressed curved areas, the two sections 18, however, the more stressed flat areas and the section 19 assigned to the edge region of the compressor roller 3 which forms the lateral folds of the roof tile molding 6.
  • the small sections 17 and 17 ' because they are less stressed, can be made in one piece from a comparatively softer and easier to machine hard metal.
  • Sections 18 and section 19 each carry a support 23 made of harder hard metal in order to be sufficiently wear-resistant.
  • the supports 23 of the sections 18 and the support 24 of the section 19 are in turn connected to the base 16 or its sections via an intermediate layer 25 from the above-mentioned suitable metal-plastic mixture.
  • the one-piece hard metal support 13 has depressions 28 on its side facing the base 11, into which threaded bushings 29 are soldered.
  • the edge part 27 of the smoothing device, which is profiled with folds 26, also carries such threaded bushings 29.
  • the hard metal support 13 is screwed into these threaded bushings 29 and penetrates the base 11, preferably by means of so-called Allen screws, which have an angular recess in the head for rotation. connected to the base 11.
  • the smoothing device On its end facing away from the compacting roller, the smoothing device is connected by means of screws 32 to a strip 31 overlapping the edge of hard metal support 13.
  • This bar 31 made of steel, takes over part of the strong thrust forces acting on the hard metal support 13 and thereby secures its connection to the base 11 of the smoothing device 7.
  • the hard metal layer 13 of the smoothing device 7 in the edge area 13 '(FIG. 8) immediately adjoining the compacting roller 3 is made of a softer material than in the rest of the area which is more subject to abrasion, these two areas having different hardnesses in the Border zone 33 merge continuously.
  • the intermediate layers 12 and 25 of the components of the device according to the invention serve, as already explained at the outset, to compensate for the various changes in shape of the different materials from which these components are composed, and in this way prevent the occurrence of dangerous internal stresses; at the same time, they ensure reliable binding of the supports 13, 23, 24 to the bases 11 and 16 of these components.
  • the material of these intermediate layers 12 and 25 can be poured between the bases and the pads before hardening and then hardened.
  • the durability of the shaping components of the device designed according to the invention optimally guarantees a uniform, consistently high quality and extensive dimensional and weight accuracy of the moldings.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Laminated Bodies (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Herstellung profilierter, plattenförmiger Formlinge, vorzugsweise Dachziegel, aus Beton od. dgl. abrasivem Material mittels einer drehbar gelagerten Verdichtungswalze und einem in Fertigungsrichtung an sie unmittelbar anschlie-8enden, formgebenden und ortsfesten Glätter, unterhalb derer die mit dem Beton od. dgl. gefüllten Schalungsformen in Fertigungsrichtung durchgeführt und dabei die darin befindlichen Formlinge verdichtet und profiliert werden, wobei die Verdichtungswalze und/oder der Glätter in ihren der Abnutzung unterliegenden Oberflächenbereichen eine aus Hartmetall bestehende Auflage besitzen.The invention relates to a device for the production of profiled, plate-shaped moldings, preferably roof tiles, made of concrete or the like or the like. Filled formwork is carried out in the production direction and the moldings located therein are compacted and profiled, the compacting roller and / or the smoother having a surface made of hard metal in their surface areas subject to wear.

Eine solche Vorrichtung, bei der die aus Werkzeugstahl bestehende Basis eine aus härterem Material, vorzugsweise Wolframkarbid, bestehende Auflage trägt, die durch Verschweißen, Verlöten oder Hartlöten mit der Basis verbunden ist, wurde bereits aus der britischen Patentschrift 739 860 bekannt.Such a device, in which the base made of tool steel carries a support made of a harder material, preferably tungsten carbide, which is connected to the base by welding, soldering or brazing, has already been known from British Patent 739,860.

Bei der Herstellung einer solchen Vorrichtung, und zwar insbesondere bei der Herstellung des profilierten Glätters, besteht ein Problem darin, das harte Material der Auflage in absolut formgetreue Übereinstimmung mit dem Profil der Basis zu bringen, um dadurch den für eine zuverlässige Verbindung dieser Teile durch Schweißen od. dgl. erforderlichen flächigen Kontakt der Verbindungsflächen sicherzustellen.One problem with the manufacture of such a device, in particular the manufacture of the profiled smoothing device, is to bring the hard material of the support into perfect conformity with the profile of the base, in order thereby to ensure that these parts are reliably connected by welding or the like. Ensure the necessary surface contact of the connecting surfaces.

Bei dem Glätter der obenbezeichneten vorbekannten Vorrichtung wurde zur Lösung dieses Problems vorgesehen, sowohl deren Basis als auch deren Auflage in einzelne Streifen aufzuteilen, wobei jeder Basisstreifen mit einem gleichbreiten Streifen des die Auflage bildenden Materiales einzeln verbunden war. Diese aus verschiedenen Materialien bestehenden Streifen wurden sodann zur vollen Breite des Glätters aneinandergefügt und z. B. durch Schraubbolzen miteinander verspannt.In order to solve this problem, in the straightener of the above-mentioned known device, both its base and its support were divided into individual strips, each base strip being connected individually to a strip of the same width of the material forming the support. These strips made of different materials were then joined together to the full width of the smoothing and z. B. clamped together by bolts.

Diese Bauweise des Glätters erweist sich jedoch nicht nur als aufwendig und kompliziert, sondern auch als nachteilig bezüglich der Aufteilung der Basis. Es erscheint wünschenswert, diese Basis kompakt einstückig anzufertigen, um deren Festigkeit und Zusammenhalt sicherzustellen und deren Anfertigung zu vereinfachen.However, this design of the smoother proves not only to be complex and complicated, but also disadvantageous with regard to the division of the base. It seems desirable to make this base compactly in one piece in order to ensure its strength and cohesion and to simplify its manufacture.

Dazu kommt, daß die für die Basis einerseits und für die Auflage anderseits verwendeten verschiedenen Materialien verschiedenes physikalisches Verhalten zeigen und das Material der Auflage eine erhebliche Sprödigkeit aufweist. Daraus resultieren, z. B. infolge von Temperaturunterschieden auftretende Formänderungen, die Schäden herbeiführen und die Festigkeit der Verbindung zwischen Basis und Auflage beeinträchtigen können.In addition, the different materials used for the base on the one hand and for the support on the other hand show different physical behavior and the material of the support exhibits considerable brittleness. This results, for. B. due to temperature differences occurring shape changes that can cause damage and affect the strength of the connection between the base and support.

Aufgabe vorliegender Erfindung ist es, diese Mängel zu beheben und eine Vorrichtung der eingangs bezeichneten Gattung so zu gestalten, daß die obenerwähnten Schwierigkeiten vermieden werden.The object of the present invention is to remedy these deficiencies and to design a device of the type described at the outset in such a way that the above-mentioned difficulties are avoided.

Erfindungsgemäß ist bei einer Vorrichtung dieser Gattung vorgesehen, daß die Hartmetallauflage über eine aus einem Metall-Kunststoff-Gemenge, vorzugsweise einem Stahl-Kunststoff-Gemenge, bestehende Zwischenschicht mit der, vorzugsweise aus Stahl bestehenden, Basis, gegebenenfalls formschlüssig, beispielsweise - wie an sich bekannt - mittels ineinandergreifender, hinterschnitten profilierter Federn und Nuten, verbunden ist.According to the invention, in a device of this type it is provided that the hard metal layer has an intermediate layer with a base, preferably made of steel, optionally with a positive fit, for example, as such, via an intermediate layer consisting of a metal-plastic mixture, preferably a steel-plastic mixture known - is connected by means of interlocking, undercut profiled tongues and grooves.

Es wurde nämlich erkannt, daß eine solche Zwischenschicht bei hoher Klebekraft und guten elastischen Eigenschaften die unterschiedlichen Formänderungen der Auflage einerseits und der Basis anderseits einwandfrei auszugleichen vermag, dennoch aber eine außerordentlich zuverlässige, zähe Verbindung dieser verschiedenen Materialien gewährleistet.It was recognized that such an intermediate layer with high adhesive strength and good elastic properties can perfectly compensate for the different changes in shape of the support on the one hand and the base on the other hand, but nevertheless ensures an extremely reliable, tough connection of these different materials.

Weil sich Hartmetall nur vergleichsweise schwierig zu kompliziert profilierten Gebilden verarbeiten läßt, kann die Hartmetallauflage der Verdichtungswalze bzw. des Glätters deren Profilierung entsprechend über deren Gesamtbreite unterteilt und aus Teilstücken zusammengesetzt werden.Because hard metal can only be processed comparatively difficult to form complex profiled structures, the hard metal support of the compacting roller or of the smoothing machine can be divided according to its profile over its entire width and can be assembled from sections.

Dies läßt sich in vorteilhafterweise für die Herstellung von Dachziegeln mit mehreren sich über die Gesamtbreite teils gewölbt teils eben erstreckenden Bereichen, insbesondere für die Herstellung von sogenannten Römerprofilen anwenden. In dieser Hinsicht ist eine Gestaltung der Vorrichtungsbestandteile zu entwickeln, bei der eine wünschenswert einfache, robuste und gegen Bruchgefahr unempfindliche Form der Hartmetallauflagen anwendbar ist.This can advantageously be used for the production of roof tiles with a plurality of regions which extend over the entire width, in part domed and in part flat, in particular for the production of so-called Roman profiles. In this regard, a design of the device components is to be developed in which a desirably simple, robust and hard-wearing form of the hard metal supports can be used.

Vorteilhafterweise kann die Hartmetallauflage des Glätters - entsprechend dem Profil der herzustellenden Dachziegel, die über ihre Breite teils gewölbte teils ebene Bereiche aufweisen - in ebensoviele flache und gewölbte Teilstücke unterteilt sein, die mit ihren Längsrändern dicht aneinandergefügt mit der Basis verbunden sind.Advantageously, the hard metal support of the smoothing device - according to the profile of the roof tiles to be produced, which have partly curved and partly flat areas over their width - can be divided into as many flat and curved sections, which are joined together with their longitudinal edges and joined to the base.

Gleichermaßen kann aber vorteilhafterweise auch die Basis der Verdichtungswalze dem Profil der Dachziegel entsprechend in solche Teilstücke unterteilt sein, die dann auf einer gemeinsamen Antriebswelle gelagert sind. Daraus ergibt sich als weiterer Vorteil, daß solche Teilstücke im Falle eines Bruches einzeln ausgetauscht bzw. erneuert werden können, ohne daß es einer Auswechslung des ganzen Bestandteiles bedarf.Equally, however, the base of the compaction roller can advantageously also be subdivided according to the profile of the roof tiles into those sections which are then mounted on a common drive shaft. This results in a further advantage that such sections can be replaced or renewed individually in the event of breakage, without the need to replace the entire component.

Vorteilhafterweise sind den gewölbten Bereichen, den ebenen Bereichen und dem mit Falzen versehenen Bereich der Profilierung des Dachziegels gesonderte Teilstücke der Basis der Verdichtungswalze zugeordnet.Advantageously, separate sections of the base of the compacting roller are assigned to the curved areas, the flat areas and the area of the profiling of the roof tile provided with folds.

Zweckmäßigerweise besitzen nur die stark beanspruchten, nämlich nur die ebenen Bereiche und der mit Falzen versehene Randbereich der Verdichtungswalze eine aus Hartmetall bestehende, auf der Basis mittels der Zwischenschicht befestigte Auflage. In den gewölbten Bereichen, die von vornherein weniger beansprucht und verschlissen werden, bedarf es erfahrungsgemäß keiner solchen Auflage. Die Teilstücke der gewölbten Bereiche können deshalb zur Gänze aus einem im Vergleich zum Hartmetall der Auflagen weicheren Material bestehen, zumal es sich um kompakt gestaltete und vergleichsweise kleine Teilstücke handelt, die von vornherein keiner Bruchgefahr unterliegen.Advantageously, only the heavily used, namely only the flat areas and the edge area provided with folds have the Compaction roller is a hard metal pad attached to the base by means of the intermediate layer. Experience has shown that no such requirement is required in the domed areas, which are less stressed and worn from the outset. The sections of the arched areas can therefore consist entirely of a material that is softer than the hard metal of the supports, especially since the sections are compact and comparatively small and are not subject to any risk of breakage from the outset.

Im folgenden wird die Erfindung anhand in den Zeichnungen beispielsweise dargestellter Ausführungsformen der Vorrichtungsbestandteile näher erläutert. Es zeigen in diesen Zeichnungen

  • Figur 1 die schematische Seitenansicht des an sich bekannten grundsätzlichen Aufbaues der Vorrichtung,
  • Figur 2 die zugehörige Draufsicht in Richtung des Pfeiles II der Figur 1 und die
  • Figur 3 eine Stirnansicht in Richtung des Pfeiles 111 der Figur 1, wobei der Deutlichkeit wegen nur der Formling im Schnitt dargestellt ist.
  • Figuren4 und 5 zeigen einen Querschnitt bzw. einen Längsschnitt des Glätters und die
  • Figur 6 ist ein Längsschnitt durch eine Verdichtungswalze. Die
  • Figur zeigt einen Querschnitt durch eine andere Ausführungsform eines Glätters und die
  • Figur 8 ist ein Schnitt in der Ebene VIII der Figur 7.
The invention is explained in more detail below with reference to embodiments of the device components which are shown, for example, in the drawings. It show in these drawings
  • FIG. 1 shows the schematic side view of the basic structure of the device known per se,
  • Figure 2 shows the associated top view in the direction of arrow II of Figure 1 and
  • Figure 3 is an end view in the direction of arrow 111 of Figure 1, only the molding is shown in section for clarity.
  • Figures 4 and 5 show a cross section and a longitudinal section of the smoothing device and
  • Figure 6 is a longitudinal section through a compaction roller. The
  • Figure shows a cross section through another embodiment of a smoother and the
  • Figure 8 is a section on the plane VIII of Figure 7.

Die Figuren 1 bis 3 stellen zunächst den Vorratsbehälter 1 dar, in den der zu verarbeitende Beton mit einer Korngröße des Zuschlagstoffes von etwa 0 bis 3 mm aus einem Mischer zugeführt und in dem er vom rotierenden Verteiler, z. B. einer Stachelwalze 2, deren Aufgabe es ist, das Material gleichmäßig zu verteilen, unter die Verdichterwalze 3, den sogenannten « Roller », gefördert wird. Der Unterseite dieser Verdichterwalze 3 werden ferner auf einem Maschinenbett 4 (Figur 3) Schalungsformen 5 für die zu formenden Formlinge 6 zugeführt.Figures 1 to 3 first represent the storage container 1, in which the concrete to be processed with a grain size of the aggregate of about 0 to 3 mm is fed from a mixer and in which it from the rotating distributor, for. B. a spiked roller 2, the task of which is to distribute the material evenly, is promoted under the compressor roller 3, the so-called «roller». The underside of this compacting roller 3 is also fed formwork molds 5 for the moldings 6 to be molded on a machine bed 4 (FIG. 3).

Von der Verdichterwalze 3, die ebenso wie die Stachelwalze 2 mit einer bestimmten Drehzahl rotiert, wird der aus dem Vorratsbehälter 1 in die Schalungsformen 5 eindringende Beton verdichtet und dabei gleichzeitig richtig dosiert.From the compacting roller 3, which, like the spiked roller 2, rotates at a certain speed, the concrete penetrating from the storage container 1 into the formwork forms 5 is compacted and at the same time metered correctly.

Nun gelangen die mit dem verdichteten Beton gefüllten Schalungsformen 5 unter den Glätter 7, der mit einem bestimmten Anstellwinkel in bezug zum Maschinenbett 4 schräggestellt ist und mit seiner zu einer spitzen Kante ausgebildeten, der Verdichterwalze 3 zugewendeten Stirnseite unmittelbar an deren Unterseite tangential anschließt. Dieser Glätter 7, der sogenannte « Slipper », preßt, glättet und profiliert den in den vorbeiwandernden Schalungsformen 5 befindlichen Beton endgültig und ist mittels einer Druckplatte 8 in bezug zur Verdichterwalze 3 einstellbar, um die Größe des zwischen diesen Bestandteilen bestehenden Spaltes regeln zu können. Diese Größe mußte bei den bisher bekannten Vorrichtungen dieser Gattung bei stetiger Abnützung der Bestandteile immer wieder in relativ kurzen Zeitabständen nachgestellt werden. Der Glätter 7 wird von einer das Maschinenbett 4 und den Förderweg der Schalungsformen 5 überspannenden Brücke 9 gehalten. Die Fertigungsrichtung und Föderrichtung der Schalungsformen 5 ist mit dem Pfeil 10 bezeichnet.Now the formwork forms 5 filled with the compacted concrete get under the smoother 7, which is inclined at a certain angle of attack with respect to the machine bed 4 and with its end face, which is formed to a pointed edge and faces the compacting roller 3, connects tangentially directly to its underside. This smoother 7, the so-called “slipper”, presses, smoothes and profiles the concrete located in the formwork forms 5 passing by and is adjustable by means of a pressure plate 8 in relation to the compacting roller 3 in order to be able to regulate the size of the gap existing between these components. This size had to be adjusted again and again in relatively short time intervals in the previously known devices of this type with constant wear of the components. The smoother 7 is held by a bridge 9 spanning the machine bed 4 and the conveying path of the formwork forms 5. The direction of manufacture and the direction of conveyance of the formwork 5 is indicated by the arrow 10.

Insoweit gehört der prinzipielle Aufbau der Vorrichtung zum vorbekannten Stand der Technik.In this respect, the basic structure of the device is part of the prior art.

Erfindungsgemäß weist nun der in den Figuren 4 und 5 in größerem Maßstab im Längs- und Querschnitt dargestellte Glätter 7 eine aus Guß-oder Schmiedestahl bestehende Basis 11 auf, die über eine aus einem zunächst gießfähigen, härtbaren Gemenge von etwa 80 % Stahl und 20 % Epoxiharz bestehende Zwischenschicht 12 mit einer aus dem sogenannten Hartmetall bestehenden Auflage 13 verbunden ist.According to the invention, the smoother 7 shown in FIGS. 4 and 5 on a larger scale in the longitudinal and cross-section now has a base 11 made of cast or forged steel, which has an initially castable, hardenable mixture of about 80% steel and 20% Epoxy resin existing intermediate layer 12 is connected to a support 13 consisting of the so-called hard metal.

Mit Hartmetall bezeichnet man bekanntlich eine gesinterte Metall-Hartlegierung, die aus einem oder mehreren Hartstoffen, z. B. Wolfram, Titan, Tantalkarbid usw. mit einem Bindemetall der Eisengruppe, meist Kobalt aber auch Nickel oder Eisen, besteht und eine besonders hohe Härte und Verschleißfestigkeit aufweist.With hard metal is known a sintered metal hard alloy, which consists of one or more hard materials, eg. B. tungsten, titanium, tantalum carbide, etc. with a binding metal of the iron group, mostly cobalt but also nickel or iron, and has a particularly high hardness and wear resistance.

Die Verbindung zwischen der Basis 11 und der Auflage 13 ergibt sich im wesentlichen schon aus der Verkittung mittels der Zwischenschicht 12, doch können - gemäß der Ausführungsform nach den Figuren 4 und 5-zusätzlich auch noch hinterschnitten profilierte Federn 14 und Nuten 15 zur formschlüssigen Sicherung dieser Verbindung vorgesehen sein, wie sie in Fig.5 dargestellt sind.The connection between the base 11 and the support 13 essentially results from the cementing by means of the intermediate layer 12, but - according to the embodiment according to FIGS. 4 and 5 - undercut profiled springs 14 and grooves 15 can also additionally be provided for the positive locking of these Connection may be provided, as shown in Fig.5.

Wie ferner die Fig. 4 zeigt, besteht die Auflage aus Teilstücken, die den ebenen bzw. gewölbten Bereichen des Glätters 7 entsprechen und mit ihren Längsrändern dicht aneinandergefügt mit der Basis 11 verbunden sind. Die Auflage 13 könnte aber - im Rahmen der Erfindung - auch aus einem Stück bestehen. Ein Randteil 27 des Glätters 7 ist mit Falzen 26 profiliert ; er kann zur Gänze aus Hartmetall bestehen.As further shown in FIG. 4, the support consists of sections which correspond to the flat or curved areas of the smoothing device 7 and are connected to the base 11 with their longitudinal edges closely joined together. The pad 13 could - in the context of the invention - also consist of one piece. An edge part 27 of the smoothing device 7 is profiled with folds 26; it can consist entirely of hard metal.

Die Verdichterwalze 3 zeigt den aus Figur 6 ersichtlichen erfindungsgemäßen Aufbau, und zwar besteht ihre Basis 16 aus den Teilstücken 17, 17', 18 und 19, die auf der Antriebswelle 20 aufgereiht und mittels eines Keiles 21 und einer Mutter 22 drehfest gehalten sind.The compressor roller 3 shows the construction according to the invention shown in FIG. 6, namely its base 16 consists of the sections 17, 17 ', 18 and 19 which are lined up on the drive shaft 20 and held in a rotationally fixed manner by means of a wedge 21 and a nut 22.

Auch diese Verdichterwalze 3 umfaßt - der Profilierung der herzustellenden Formlinge 6 entsprechend - teils ebene teils gewölbt profilierte Bereiche, und zwar sind die Teilstücke 17 und 17' den weniger beanspruchten gewölbten Bereichen, die beiden Teilstücke 18 hingegen den stärker beanspruchten ebenen Bereichen und das Teilstück 19 dem die seitlichen Falze des Dachziegel-Formlinges 6 formenden Randbereich der Verdichterwalze 3 zugeordnet.This compacting roller 3 also includes - in accordance with the profiling of the moldings 6 to be produced - partly flat, partly curved, profiled areas, namely the sections 17 and 17 'are the less stressed curved areas, the two sections 18, however, the more stressed flat areas and the section 19 assigned to the edge region of the compressor roller 3 which forms the lateral folds of the roof tile molding 6.

Die kleinen Teilstücke 17 und 17' können, weil sie weniger beansprucht werden, aus einem vergleichsweise weicheren und leichter zu bearbeitenden Hartmetall einstückig hergestellt sein.The small sections 17 and 17 ', because they are less stressed, can be made in one piece from a comparatively softer and easier to machine hard metal.

Hingegen müssen die untereinander gleichen Teilstücke 18 und das Teilstück 19 je eine aus härterem Hartmetall bestehende Auflage 23 tragen, um ausreichend verschleißfest zu sein. Die Auflagen 23 der Teilstücke 18 und die Auflage 24 des Teilstückes 19 sind wiederum über eine Zwischenschicht 25 aus dem oben bereits erwähnten, hiefür geeigneten Metall-Kunststoff-Gemenge mit der Basis 16 bzw. deren Teilstücken verbunden.On the other hand, they have to be the same as each other Sections 18 and section 19 each carry a support 23 made of harder hard metal in order to be sufficiently wear-resistant. The supports 23 of the sections 18 and the support 24 of the section 19 are in turn connected to the base 16 or its sections via an intermediate layer 25 from the above-mentioned suitable metal-plastic mixture.

Bei der abgewandelten Ausführungsform eines Glätters 7 nach den Figuren 7 und 8 weist die einstückig ausgebildete Hartmetallauflage 13 an Ihrer der Basis 11 zugewendeten Seite Vertiefungen 28 auf, in die Gewindebuchsen 29 eingelötet sind. Auch der mit Falzen 26 profilierte Randteil 27 des Glätters trägt solche Gewindebuchsen 29. Die Hartmetallauflage 13 ist mittels in diesen Gewindebuchsen 29 verschraubter, die Basis 11 durchsetzender Schrauben 30, vorzugsweise mittels sogenannter Imbus-Schrauben, die zwecks Verdrehung im Kopf eine kantige Vertiefung aufweisen, mit der Basis 11 verbunden.In the modified embodiment of a smoothing device 7 according to FIGS. 7 and 8, the one-piece hard metal support 13 has depressions 28 on its side facing the base 11, into which threaded bushings 29 are soldered. The edge part 27 of the smoothing device, which is profiled with folds 26, also carries such threaded bushings 29. The hard metal support 13 is screwed into these threaded bushings 29 and penetrates the base 11, preferably by means of so-called Allen screws, which have an angular recess in the head for rotation. connected to the base 11.

An seiner der Verdichtungswalze abgekehrten Stirnseite ist der Glätter mit einer den Rand der Hartmetallauflage 13 überlappenden Leiste 31 mittels der Schrauben 32 verbunden.On its end facing away from the compacting roller, the smoothing device is connected by means of screws 32 to a strip 31 overlapping the edge of hard metal support 13.

Diese Leiste 31, aus Stahl bestehend, übernimmt einen Teil der auf die Hartmetallauflage 13 wirkenden starken Schubkräfte und sichert dadurch deren Verbindung mit der Basis 11 des Glätters 7.This bar 31, made of steel, takes over part of the strong thrust forces acting on the hard metal support 13 and thereby secures its connection to the base 11 of the smoothing device 7.

Gemäß einem sehr vorteilhaften Erfindungsmerkmal besteht die Hartmetallauflage 13 des Glätters 7 in dem an die Verdichtungswalze 3 unmittelbar anschließenden Randbereich 13' (Figur 8) aus einem weicheren Material als in dem übrigen, höher auf Abrieb beanspruchten Bereich, wobei diese beiden Bereiche unterschiedlicher Härte in der Grenzzone 33 kontinuierlich ineinander übergehen.According to a very advantageous feature of the invention, the hard metal layer 13 of the smoothing device 7 in the edge area 13 '(FIG. 8) immediately adjoining the compacting roller 3 is made of a softer material than in the rest of the area which is more subject to abrasion, these two areas having different hardnesses in the Border zone 33 merge continuously.

Die Zwischenschichten 12 bzw. 25 der Bestandteile der erfindungsgemäßen Vorrichtung dienen - wie schon eingangs erläutert - dem Ausgleich der verschiedenen Formänderungen der verschiedenen Materialien, aus denen sich diese Bestandteile zusammensetzen, und sie verhindern solcherart das Auftreten gefährdender innerer Spannungen ; sie sorgen gleichzeitig für eine zuverlässige Bindung der Auflagen 13, 23, 24 an die Basen 11 bzw. 16 dieser Bestandteile. Das Material dieser Zwischenschichten 12 bzw. 25 läßt sich vor der Erhärtung ohne Schwierigkeit zwischen die Basen und die Auflagen eingießen und sodann erhärten.The intermediate layers 12 and 25 of the components of the device according to the invention serve, as already explained at the outset, to compensate for the various changes in shape of the different materials from which these components are composed, and in this way prevent the occurrence of dangerous internal stresses; at the same time, they ensure reliable binding of the supports 13, 23, 24 to the bases 11 and 16 of these components. The material of these intermediate layers 12 and 25 can be poured between the bases and the pads before hardening and then hardened.

Die Lebensdauer erfindungsgemäß gestalteter Vorrichtungsbestandteile ist im Vergleich zu bisher benutzten, aus geschmiedetem sowie gegossenem Stahl bestehenden gleichartigen Bestandteilen erheblich erhöht : Während vorbekannte Bestandteile nach der Produktion von etwa 225.000 Einheiten ausgetauscht werden mußTen, weil die Abnutzung örtlich so groß geworden war, daß die Soll-Abmessungen der Formlinge nicht mehr einzuhalten waren, zeigten erfindungsgemäß gestaltete Bestandteile auch nach der Produktion von mehr als fünf Millionen Einheiten noch keine nennenswerte Abnützung.The lifespan of device components designed according to the invention is considerably increased compared to previously used similar components consisting of forged and cast steel: While previously known components had to be replaced after the production of about 225,000 units, because the wear had become so large locally that the desired The dimensions of the moldings could no longer be observed, even after the production of more than five million units, components designed according to the invention showed no significant wear.

Ein weiterer schätzenswerter Vorteil solcher Bestandteile besteht darin, daß sich die bei den vorbekannten Vorrichtungen bisher in kurzen Zeitabständen erforderlichen, die Abnützung berücksichtigenden Nachstellungen des Glätters in bezug zur Verdichtungswalze erübrigen.Another appreciable advantage of such components is that the readjustments of the smoothing device with respect to the compaction roller, which have been required at short time intervals in the previously known devices, are unnecessary.

Durch die Beständigkeit der erfindungsgemäß ausgebildeten formgebenden Bestandteile der Vorrichtung ist eine gleichmäßige, konstant hohe Qualität und eine weitgehende Maß- und Gewichtsgenauigkeit der Formlinge optimal gewährleistet.The durability of the shaping components of the device designed according to the invention optimally guarantees a uniform, consistently high quality and extensive dimensional and weight accuracy of the moldings.

Claims (6)

1. Apparatus for the manufacture of profiled, platelike moulded articles (6), preferably roof tiles, of concrete or a similar abrasive material by means of a rotatably mounted compression roller (3) and a shaping and stationary smoothing device (7) arranged directly adjacent the roller (3) in the direction of manufacture, moulds (5) filled with concrete or the like being arranged below the roller (3) and the smoothing device (7) and passing through in the direction of manufacture, the moulded articles (6) disposed therein being compressed and shaped, the compression roller (3) and/or the smoothing device (7) comprising a coating (13 or 23) consisting of a hard metal coating adjacent regions subject to wear, characterised in that the hard metal coating (13 or 23) is connected by way of an intermediate layer (12 or 25) consisting of a metal-plastics-mixture, preferably a steel-plastics-mixture, to a base (11 or 16), preferably consisting of steel, possibly in a positive manner, for example - as is known per se - by means of interlocking undercut springs (14) and grooves (15).
2. Apparatus according to claim 1, characterised in that the hard metal coating (13 or 23) of the compression roller and/or of the smoothing device (7) is distributed over the entire width thereof in accordance with the profiling and are formed as portions.
3. Apparatus according to claim 2 for the manufacture of profiled roof tiles having a plurality of arcuate and planar regions extending over the entire width of the tile, characterised in that the coating (13) of the smoothing device (7) is correspondingly divided into arcuate and planar portions connected to the base (11), the edges of adjacent portions being closely joined together.
4. Apparatus according to claim 2 for the manufacture of profiled roof tiles having a plurality of arcuate and planar regions extending over the entire width of the tile, characterised in that the cylindrical base (16) of the compression roller (3) is correspondingly divided into arcuate and planar portions (17, 17', 18 and 19) arranged in a row and mounted on a common drive shaft (20).
5. Apparatus according to claim 4, characterised in that individual portions (17, 17', 18, 19) are each associated with the arcuate regions of the profiling, the planar regions of the profiling and the marginal region of the profiling provided with grooves.
6. Apparatus according to claim 5, characterised in that only the portions (18, 19) subject to a considerable load and associated with the planar regions and the marginal region provided with grooves comprise a coating (23, 24) consisting of hard metal secured to an intermediate layer (25).
EP81890026A 1980-02-26 1981-02-16 Apparatus for the manufacture of profiled plate-like moulded articles of concrete or the like, preferably roof tiles Expired EP0035010B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81890026T ATE5303T1 (en) 1981-02-16 1981-02-16 DEVICE FOR THE MANUFACTURE OF PROFILED, PLATE-FORMING MOLDINGS, PREFERABLE ROOF TILES, MADE OF CONCRETE OR THE LIKE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0105080A AT368436B (en) 1980-02-26 1980-02-26 DEVICE FOR PRODUCING PROFILED ROOF TILES FROM CONCRETE OR THE LIKE.
AT1050/80 1980-02-26

Publications (2)

Publication Number Publication Date
EP0035010A1 EP0035010A1 (en) 1981-09-02
EP0035010B1 true EP0035010B1 (en) 1983-11-16

Family

ID=3505500

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81890026A Expired EP0035010B1 (en) 1980-02-26 1981-02-16 Apparatus for the manufacture of profiled plate-like moulded articles of concrete or the like, preferably roof tiles

Country Status (7)

Country Link
EP (1) EP0035010B1 (en)
AT (1) AT368436B (en)
AU (1) AU547961B2 (en)
DE (1) DE3161392D1 (en)
DK (1) DK152415C (en)
NZ (1) NZ196325A (en)
ZA (1) ZA811055B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106217596A (en) * 2016-09-07 2016-12-14 山东华平新材料科技有限公司 Make equipment and the method for Inorganic Non-metallic Materials molding
CN106217597A (en) * 2016-09-07 2016-12-14 山东华平新材料科技有限公司 Make equipment and the method for Inorganic Non-metallic Materials molding

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IE53484B1 (en) * 1981-02-13 1988-11-23 Redland Roof Tiles Ltd Wire electrode spark erosion
WO1986003448A1 (en) * 1984-12-11 1986-06-19 Thomas William Whitelaw Tile making apparatus and method
DE3506668A1 (en) * 1985-02-26 1986-08-28 Reifenhäuser GmbH & Co Maschinenfabrik, 5210 Troisdorf WEAR-RESISTANT COATING ON THE CYLINDER AND ON THE SCREW OF A PLASTIC SCREW PRESS
DE3506726A1 (en) * 1985-02-26 1986-08-28 Reifenhäuser GmbH & Co Maschinenfabrik, 5210 Troisdorf WEAR-RESISTANT COATING ON THE CYLINDER AND ON THE SCREW OF A PLASTIC SCREW PRESS
DE3738361C1 (en) * 1987-11-12 1989-01-26 Werner Dipl-Ing Mandt Profile mouthpiece for the production of concrete roof tiles
GB2277707B (en) * 1993-04-29 1996-07-03 Redland Technology Ltd Improvements in a roof tile making machine
CN103448143A (en) * 2013-08-15 2013-12-18 光明铁道控股有限公司 Production method of heavy-load concrete turnout tie

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GB739860A (en) * 1953-03-30 1955-11-02 Aodogan O Rahilly Improvements in machines for moulding tiles and the like
DE1683517A1 (en) * 1966-03-07 1969-11-06 Schlosser & Co Gmbh Forming and processing tools for the concrete industry

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DE1584724C3 (en) * 1965-05-04 1975-11-06 Schaper Geb. Krueger, Gisela, 3251 Messenkamp Device for producing roof tiles, in particular concrete roof tiles

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Publication number Priority date Publication date Assignee Title
GB739860A (en) * 1953-03-30 1955-11-02 Aodogan O Rahilly Improvements in machines for moulding tiles and the like
DE1683517A1 (en) * 1966-03-07 1969-11-06 Schlosser & Co Gmbh Forming and processing tools for the concrete industry

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106217596A (en) * 2016-09-07 2016-12-14 山东华平新材料科技有限公司 Make equipment and the method for Inorganic Non-metallic Materials molding
CN106217597A (en) * 2016-09-07 2016-12-14 山东华平新材料科技有限公司 Make equipment and the method for Inorganic Non-metallic Materials molding

Also Published As

Publication number Publication date
AT368436B (en) 1982-10-11
NZ196325A (en) 1984-05-31
AU547961B2 (en) 1985-11-14
DK152415C (en) 1988-08-01
EP0035010A1 (en) 1981-09-02
DK152415B (en) 1988-02-29
AU6746781A (en) 1981-09-03
ZA811055B (en) 1982-09-29
ATA105080A (en) 1982-02-15
DE3161392D1 (en) 1983-12-22
DK70081A (en) 1981-08-27

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